Harpy eagle eating monkey

Female harpy eagles typically weigh 6 to 9 kg (13 to 20 lb). One source states that adult females can weigh up to 10 kg (22 lb). An exceptionally large captive female, “Jezebel”, weighed 12. 3 kg (27 lb). Being captive, this large female may not be representative of the weight possible in wild harpy eagles due to differences in the food availability. The male, in comparison, is much smaller and may range in weight from 4 to 5. 95 kg (8. 8 to 13. 1 lb). The average weight of adult males has been reported as 4. 4 to 4. 8 kg (9. 7 to 10. 6 lb) against an average of 7. 35 to 8. 3 kg (16. 2 to 18. 3 lb) for adult females, a 35% or higher difference in mean body mass. Harpy eagles may measure from 86. 5 to 107 cm (2 ft 10 in to 3 ft 6 in) in total length and have a wingspan of 176 to 224 cm (5 ft 9 in to 7 ft 4 in). Among the standard measurements, the wing chord measures 54–63 cm (1 ft 9 in–2 ft 1 in), the tail measures 37–42 cm (1 ft 3 in–1 ft 5 in), the tarsus is 11. 4–13 cm (4. 5–5. 1 in) long, and the exposed culmen from the cere is 4. 2 to 6. 5 cm (1. 7 to 2. 6 in).